After primary and secondary treatment processes, disinfection is necessary to eliminate pathogens present in the treated wastewater. Chlorine has been a traditional disinfectant in sewage treatment, but due to concerns about chlorine by-products and their environmental impact, alternative disinfectants like ozone and ultraviolet (UV) light have gained popularity. Ozone is a powerful oxidant that effectively kills bacteria and viruses, while UV light offers a chemical-free disinfection method. The choice of disinfectant depends on various factors, including cost, effectiveness, and environmental considerations.
In the modern world, plastics play a crucial role in countless applications, ranging from packaging and automotive components to household items and construction materials. However, one of the challenges associated with the use of plastics is their susceptibility to degradation under various environmental conditions, particularly ultraviolet (UV) light exposure. This degradation can lead to a loss of mechanical strength, color fading, and overall deterioration in performance. To combat these issues, light stabilizers have emerged as essential additives that help enhance the longevity and visual appeal of plastic products.